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. 2020 Jan;38(1):10–38. doi: 10.2337/cd20-as01

TABLE 6.4.

Classification of hypoglycemia

Glycemic criteria/description
Level 1 Glucose <70 mg/dL (3.9 mmol/L) and ≥54 mg/dL (3.0 mmol/L)
Level 2 Glucose <54 mg/dL (3.0 mmol/L)
Level 3 A severe event characterized by altered mental and/or physical status requiring assistance for treatment of hypoglycemia

Reprinted from Agiostratidou G, Anhalt H, Ball D, et al. Diabetes Care 2017;40:1622–1630.